On Saturday 19 July 2008, Nikos Chantziaras wrote:
> Alan Mackenzie wrote:
> >> The default in new kernels is to only use /dev/sd*.
> >
> > I'm totally confused. Doesn't "sd*" mean "SCSI disk drive"? When I was
> > installing Gentoo from the CD, I had to mount my main hard drive as
> > /dev/sdb5. When I built my own kernel, it needed /dev/hdh5.
> >
> > This seems crazy. Is it documented anywhere in Gentoo?
>
> Not sure. But if you have /dev/hd* instead of /dev/sd*, it means you
> configured your kernel with the legacy IDE drivers instead of the new
> (P)ATA drivers. The new drivers use /dev/sd* (for IDE/PATA/SATA and
> SCSI alike; there's no difference anymore.)
>
> The CD/DVD-ROM can show up as /dev/sd* even with the old legacy drivers
> if you have enable "SCSI Emulation" for it.
>
> In any event, try to build a new kernel using the new drivers. The old
> legacy driver you're using will probably get declared "deprecated" at
> some point (if it didn't happen already).
>
> To enable the new drivers, first disable the legacy drivers. ("Device
> Drivers" section):
>
> < > ATA/ATAPI/MFM/RLL support --->
>
> Now enable the new drivers:
>
> <*> Serial ATA (prod) and Parallel ATA (experimental) drivers --->
>
> Enter that section and pick your chipset. Don't enable the:
>
> < > Generic ATA support
>
> unless you can't find a native driver for your chipset (I doubt you have
> some extremely rare/exotic mainboard ;)What would be the recommended way of upgrading from the /dev/hd to /dev/sd then? I have held back doing this because I didn't have the time to mess about with it. If I were to configure a new kernel without legacy ATA drivers, how would I know what my devices will be seen as in advance, so that I can change my /etc/fstab before I reboot? -- Regards, Mick
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